To extract the content types, we conducted an interactive process of coding.
In this process, three authors of this paper (i.e. the first, fourth, and fifth authors) firstly discussed the initial coding guide from previous work [1]}.
To make the coding guide fit with our study, the initial coding guide were adjusted and the other codes were added for labeling the threads.
Similar to the approach from prior works [2]}, [3]}, the authors subsequently coded 30 initial posts of a thread independently for each type of askers in the sample using the designed labels.
The kappa scores for each status of askers were calculated to see the level of agreement between three authors.http://justusrandolph.net/kappa/
We gained 0.76 and 0.72 for both Juniors and Members which mean `acceptable', and 0.82 for Seniors which indicates `almost perfect' [4]}.
Based on these motivated agreement scores, the coding task for the remaining main posts from the sample were undertaken only by the first author.
The following terms list shows the labels used in our analysis to code the threads discussed including the descriptions:
